get index3 working.
get index3 working.

USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu,USCDataScience/polar.usc.edu